<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8"/>
    <title>权限不足</title>
</head>
<body>
呀！权限不足
<span th:text="${exception}"></span>
</body>
</html>